Polar bears are among the most welfare-challenging animals to keep in zoological collections, with their vast natural ranging behavior, complex cognitive needs, and dependence on sea ice creating welfare deficits in almost all zoo settings.
Polar bear welfare in zoos represents one of the most philosophically difficult questions in zoo animal welfare. The evidence of widespread stereotypic behavior - repetitive pacing that occurs for hours daily in many captive individuals - is a clear indicator of chronic psychological suffering. Larger enclosures with more enrichment reduce but do not eliminate stereotypy, suggesting that confinement at any achievable zoo scale falls short of meeting polar bear behavioral needs. The educational and conservation arguments for keeping polar bears in zoos must be weighed against this clear welfare cost. Some zoos have concluded that the welfare cost is unjustifiable; others continue to keep polar bears with intensive management. The debate reflects broader questions about what level of welfare compromise is acceptable in conservation-oriented captivity.